Feature: 1. DURABLE MATERIAL: The tank transmitter is made of heavy duty 316 stainless steel, which possesses corrosion resistance, good mechanical properties and high strength 2. STABLE AND RELIABLE: The water level sensor is reed pipe, durable and reliable, stable output signal. The tank does not need to be adjusted 3. WIDE APPLICATION: Fuel level sensors are suitable for boats, cars, trucks, buses and marine applications. Suitable for oil level gauge, water level gauge and any liquid without impurities 4. EASY TO INSTALL AND CONNECT: Fuel level transmitter with washer, mounting screw, text and graphic instructions; The wiring instructions are easy to understand. The installation will take a total of about 15 minutes to get your meter working again 5. FOR DIFFERENT TANKS: To keep the transmitter from touching the bottom of the tank, the transmitter length should be in less than the tank depth if it is a plastic tank, or 0.5in less than the tank depth if it is a metal tank Specification: Item Type: Marine Fuel Sending Unit Product Material: Body: 316 stainless steel Cable: PVC Float: NBR Installation Method: Standard SAE 5 hole type Screw Size: M5 x 0.8 Hole Diameter: Approx. 5mm / 0.20in Product Specifications: Approx. 275mm / 11in Recommended Tank Size: 285 ~ 300mm / 11.2 ~ 11.8in Output Signal: European standard 0-190ohms (0ohms when no load, 190ohms when full load) Resolution Range: Approx. 21mm / 0.83in Fuel and Water Level Sensor Type: Resistor Alarm Switch Rated Current: 500mA Protection Level: IP67 Operating Temperature: -40℉ ~ +185℉(-40℃ ~ +85℃) Applicable: Ships, yachts, trucks, RV. Package List: 1 x Fuel Sending Device5 x Screw1 x Gasket